Communication Cable

The Communicatin Cable is used with the ​RS232-Adapter that is mounted on the Raspberrys GPIO.

• cut the micro USB cable to fit the length, remove the cable coating 3 cm before the open end. Since this cable serves just for power supply, we just use the red (+5V) and the black (GND) cable, cut the remaining two other away
• cut 3 cables to length, red (12V), black (GND) and yellow (5V)
• cut the RJ45 cable to length, remove the cable coating 3 cm before the open end, cut away the cables for RJ45-Pin's 2,3
• connect RJ45-Pin5 (usually blue) with Pin 2 of the Female Sub-D plug
• connect RJ45-Pin6 (usually white-green) with Pin3 of the Female Sub-D plug
• connect RJ45-Pin8 with Pin5 of the Female Sub-D plug
• solder RJ45-Pin's 4,7 with the black cable of the micro USB plug and the other black cable (GND), use shrinkable tubing for electrical isolation
• solder RJ45-Pin1 with the red cable (12V), use shrinkable tubing for electrical isolation
• solder the third coloured cable (5V) with the red cable from the micro usb plug, use shrinkable tubing for electrical isolation
• Close the Sub-D connector, make sure that there are no short circuits